Trump has filled out some details of his plan to kick out the millions of immigrants now in the United States illegally – coming out with a policy paper over the summer, and on Wednesday, describing the effort as involving a "deportation force."

"We have to do what we have to do," Trump said. "Other people have done it. You're going to have a deportation force. You're going to do it humanely.,"Trump said

Florida Sen. Marco Rubio jumped into the fray on Wednesday, telling NPR's "Morning Edition" there'll be quick deportations for recent illegal immigrants – and those with a criminal history.

"If you haven't been here very long, or you're a criminal, you will be deported," he declared. "Otherwise, you will have to come forward, pass the background check, learn English, pay a fine, because you violated the law, start paying taxes, and you'll get a work permit. And that's all you're going to have for at least a decade."

"After 10 years on the work permit, I personally am open to — after the 10 years have expired — to allowing people to apply for a Green Card, just through the normal process that anyone else would use," he added.

Hillary Clinton summarily dismissed leading Republican rival Donald Trump's ambitious deportation force strategy to boot out 11 million illegal immigrants as absurd, inhumane and un-American. The idea of tracking down and deporting 11 million people is absurd, inhumane,...